具有分数拉普拉斯黏度和各向异性滤波的三维粘弹性流体Galerkin格式的精确可控性

IF 2.3 4区工程技术 Q1 MATHEMATICS, APPLIED

Zamm-zeitschrift Fur Angewandte Mathematik Und Mechanik Pub Date : 2023-11-03 DOI:10.1002/zamm.202300056

Luca Bisconti, Davide Catania

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引用次数: 0

摘要

摘要研究了具有记忆、分数黏度、水平各向异性滤波器正则化的三维粘弹性流体的数学模型。这种正则化是通过水平亥姆霍兹算子的逆作用得到的，并且系统被认为是在一个全周期空间域Ω中。在引入这种模型的控制版本后，我们考虑了一个合适的伽辽金近似格式。利用希尔伯特唯一性方法，建立了有限维伽辽金系统的精确可控性。

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On the exact controllability of a Galerkin scheme for 3D viscoelastic fluids with fractional Laplacian viscosity and anisotropic filtering

Abstract We study a mathematical model describing 3D viscoelastic fluids with memory, fractional viscosity, and regularized by means of a horizontal anisotropic filter. This regularization is obtained through the action of the inverse of the horizontal Helmholtz operator, and the system is considered in a fully periodic space‐domain Ω. After introducing a controlled version of such a model, we take into account for it a suitable Galerkin approximation scheme. Exploiting the Hilbert uniqueness method, we establish the exact controllability of the finite‐dimensional Galerkin system.

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来源期刊

Zamm-zeitschrift Fur Angewandte Mathematik Und Mechanik 数学-力学

CiteScore

3.30

自引率

8.70%

发文量

199

审稿时长

3.0 months

期刊介绍： ZAMM is one of the oldest journals in the field of applied mathematics and mechanics and is read by scientists all over the world. The aim and scope of ZAMM is the publication of new results and review articles and information on applied mathematics (mainly numerical mathematics and various applications of analysis, in particular numerical aspects of differential and integral equations), on the entire field of theoretical and applied mechanics (solid mechanics, fluid mechanics, thermodynamics). ZAMM is also open to essential contributions on mathematics in industrial applications.